By Becky Stern Here I’ll show you how to add flashing LEDs to your backpack for fun and safety. I used a LilyPad Arduino with a rechargeable lithium-polymer battery for flatness and re-usability. The LEDs blink in a marquee pattern, two at a time, in patriotic red, white and blue. This project also appears as a CRAFT Video.
Computer with Arduino software Needlenose pliers Scissors Sewing needle Source code and schematic
LiPower board Lithium-polymer battery and charger Conductive thread Conductive velcro – Less EMF Sticky-back velcro Bag or backpack Fabric patch to mount circuit Small scrap of fabric for switch Sewing thread LilyPad Pro Kit Go to MAKE: Projects for the full directions